The Key Technology Study Of Xiamen Xiang'an Tunnel

China's Cross-Harbor Tunnel has begun to carry out large-scale construction, which speed up the economic development of our country and promote the livelihood of the people are of great significance. In this paper, China's first cross-harbor tunnel - Xiangan tunnel studies conducted for the purpose of construction and tender of follow-up Cross-Harbor Tunnel for reference.In this paper, mainly from the construction point of view some studies, including the overall guiding ideology ,and the construction plan of tunnel through strong weathering layer in the Land Lot, through weathering groove under the sea, through other sites under the sea, of Ingate, of drainage, of ventilation. In it is introduced a number of concrete construction methods, including of portal, tunnel excavation, ballast transport, tunnel support, tunnel waterproof and lining, inside the concrete road surface and shaft.In this paper, a more detailed description of the construction of a special program to take, including TSP and deal with groundwater. TSP introduced the purpose, methods, content, planning, and describes the characteristics of several methods and applications requiring the attention of. These methods are more widely used in tunnel construction. To deal with the groundwater has a very important status in cross-harbor Tunnel. The paper spent a larger space for a more detailed explanation and discussion.